1968 Chevrolet K30 Pickup Engine: 5.3L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;. 1968 Chevrolet K30 Pickup Engine: 5.4L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;. 1968-1972 Chevrolet K30 Pickup Engine: 5.0L V8; Standard Rotation|Optional Non-Thermal Fan Clutch;.
